Donnells Dam is a dam in Tuolumne County, California. The concrete arch dam was constructed in 1958, with a height of 317 feet, and a length of 750 feet at its crest. It impounds the Middle Fork of the Stanislaus River for hydroelectric power, part of the Stanislaus River Tri-Dam project cooperatively owned by the Oakdale Irrigation District and the South San Joaquin Irrigation District. The site is surrounded by the Stanislaus National Forest.
The reservoir it creates, Donnell Lake, has a normal water surface of 418 acres and has a maximum capacity of 65,000 acre feet. Recreation includes fishing, hunting, boating, camping and hiking. The Company’s schedule was slashed by a third as drought conditions plagued the area and was asked to expedite the dam’s completion.
The Company met the more aggressive time frame and was awarded a Presidential Citation for its work on the project by President Eisenhower.